Hot-air heater.



No. 746,002. PATENTED DEC. 8, 1903.

' 0. F. BRAND.

HOT AIR HEATER.

APPLIGATION FILED MAR. 5, 1903.

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N 0.-746,002. PATENTED DEC. 8, 1903. G. F. BRAND. HOT AIR HEAT-ER.

APPLICATION FILED MAB. 5, 1903.

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Patented December 8, 1903.

UNTTEn STATEs PATENT OFFICE.

CHARLES FREDERICK BRAND, OF VVI-IEELING, WEST VIRGINIA.

HOT-AIR HEATER.

EPECKFICATION forming part of Letters Patent No. 746,002, dated December 8, 1903.

Application filed March 6, 1903. Serial No. 146.289. kNo model.)

To all whom it may concern.-

Be it known that 1, CHARLES FREDERICK BRAND, a citizen of the United States of America, and a resident of lVheeling, county of Ohio, and State of \Vest Virginia, have invented certain new and useful Improvements in Hot-Air Heaters, of which the followingis a specification.

My invention relates to hot-air heaters, and more particularly to a heater for an open grate or stove where gas is used, which is so constructed as to assure a maximum radiation of heat with a minimum supply of fuel.

The object of the invention is to provide a new and improved heater which is simple, inexpensive, durable, and efficient for the purposes for which it is designed.

A further object of the invention is to provide a device of the character mentioned which will readily produce much more heat than is ordinarily secured from an ordinary open gas-grate.

Further objects of the invention will be made apparent as further progress is made with this specification.

In describing my invention in detail reference is herein had to the accompanying drawings, forming a part of this specification, in which Figure 1 is a front plan view of an open gas-grate equipped with my invention. Fig. 2 is a longitudinal section of the same, showing my invention in cross-section. Fig. 3 is a perspective view of the radiating-box. Fig. 4 is a similar view of the deflector for the radiati11gbox. Fig. 5 is a longitudinal section of an elbow. Fig. 6 is a similar section taken on the line 6 6 of Fig. 5.

In said drawings like reference-numerals designate like parts throughout the several views.

Referring to said drawings, 1 indicates an ordinary open fireplace or grate equipped with the ordinary perforated gas-burner 2, to which the gas is supplied through the pipe 3 and the mixer 4.

5 indicates a horizontal pipe which may be either sheet metal or stiff iron, preferably the former, said pipe being located directly over said perforated burner 2. Joined to said horizontal pipe 5 at each end by means of elbows 6 is an upright metal pipe 7, said upright pipes standing close to or against the edge of the grate and having their upper ends opening into a rectangular box 8, which box is mounted on the pipe ends. Opening into the horizontal pipe 5, preferably at points midway in its length, is one or more inlet-tubes 9, the lower ends of which are bent outward, as shown, and have funnel-shaped openings or air-inlets 10.

The rectangular box 8 is open at its front side, and seated therein is a deflector, substantially as shown in Fig. 4, which is preferably formed of one continuous piece of metal 11, having its corners turned down to form supports 12. The object of said deflector is to throw or defiectthe heat which passes up into the box 8 forward. Suitably supported in front of the box 8 is a perforated sheetmetal radiator 13, into which the heat passed upward into the box 8 is deflected and from which it is permitted to escape into the room.

As shown in the drawings, the horizontal pipe 5 and the upright pipes 7 are constructed of a plurality of pieces adapted to telescope one within another in order that the device may be adjusted to fit difierentsized grates.

The horizontal piped may be, and is preferably, covered with a layer or thickness of asbestos paper 14, the object of which is to prevent the burning up of the said pipe from the dame arising from the burner 2. This may be coated over, as may also the upright pipes 7, with asbestos fiber, thus completely hiding and protecting said pipes.

My invention operates substantially as follows: The fiame from the burner 2 rises and divides on each side of the pipe 5, heating said pipe, and consequently the air therein. The hot air will then rise through the upright pipes 7to the box 8, whence it is deflected by the deflector 11 t0 the radiator 13, thence passing through the perforations 15 enters the room. As is obvious, a circulation will be established through said pipes and fresh air will be sucked through the funnel-shaped air-inlets into the pipe 5. Thus a supply of heated air will at all times be thrown out into the room.

Sufficient space is left between the upper edge of the asbestos backboard 16 and the rear face of the box 8 to admit of a draft up the chimney, which will draw all fumes and prevent their escape into the room.

The pipes 5 and 7 may be, and are preferably, flattened somewhat, as shown, so as to occupy as little space as possible-that is, the pipe 5 is flattened so that its greatest diameter will be vertical and the pipes 7 so that their greatest diameter will be horizontal. The elbows 6 are therefore flattened out at their extremities in substantially the manner shown in Figs. 5 and 6-that is, the opposite ends of each elbow are flattened at right angles to each other.

I have shown my invention in what I consider to be its simplest form; but it is apparent that various minor changes may be made in its construction without departing from the spirit or scope thereof. Hence I do not wish to limit myself to the precise construction shown and described.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a hot-air heater for open grates, the combination with a gasburner, of a horizontal pipe made up of telescopic sections and provided with suitable air-inlets, said pipe located and suitably supported directly over said gasburner, upright pipes composed of telescopic sections connected with said horizontal pipe, said upright pipes communicating at their upper ends with the box and said box in turn communicating with a perforated radiator, substantially as described.

2. In a hot-air heater for open gas-grates, the combination with a gas-burner, of a horizontal pipe located directly over said gasburnerand provided with suitable air-inlets, said pipe communicating at each end with an upright pipe, each upright pipe formed of telescopic sections and communicating with a rectangular box, which in turn communicates with a perforated radiator, substantially as described.

3. In a hot-air heater, the combination with a gas-burner, of a pipe located horizontally over said gas-burner and provided with funnel-shaped air-inlets, said horizontal pipe communicating at each end with a vertical pipe, each of said vertical pipes communicating at its upper end with a suitably-su pported box, a deflector in said box and a perforated radiator supported in front of said box in a position for receiving and distributing the heat passing upward through said vertical pipes, all of said pipes composed of two or more sections adapted to telescope.

4:. In a hot-air heater for open grates, the combination with a gas-burner, of a horizontal pipe located over said gas'burner, air-inlets communicating with said horizontal pipe, a vertical pipe communicating with said horizontal pipe, all of said pipes formed of telescopic sections, and a radiator communicating with said vertical pipe, substantially as described.

5. In a hot-air heater for open grates, the combination with a gas-burner, of a horizontal pipe located over said gas-burner, air-inlets communicating with said horizontal pipe, vertical pipes communicating with said horizontal pipe, a box communicating with said vertical pipes, a radiator communicating with said box, and a passage-way through which the fumes escape, substantially as described.

6. In a h0t-air heater for open grates, the combination with a gas-burner, of a horizontal adjustable pipe located over said gasburner, air-inlets communicating with said horizontal pipe, vertical adjustable pipes communicating with said horizontal pipe, a box communicating with said vertical pipes, and a perforated radiator communicating with said box, substantially as described.

7. In a hot-air heater for open grates, the combination with a gas-burner, of a horizontal adjustable pipe located over said gasburner, air-inlets communicating with said horizontal pipe, vertical pipes composed of adjustable sections communicating with said horizontal pipe, an open box communicating with said vertical pi pes,a heat de flector seated in said open box, and a perforated radiator suitably mounted in front of said box and communicating therewith, substantially as described.

8. In a hot-air heater for open grates, the combination with a gas-burner, of a horizontal pipe located over said gas-burner, air-inlets comm unicatingwith said horizontal pipes, vertical pipes communicating with said horizontal pipe, all of said pipes formed of two or more parts and arranged to telescope, and a perforated radiator communicating with said vertical pipes, substantially as described.

9. In a hot-air heater for open grates, the combination with a gas-burner, of a horizontal pipe located over said gasburner, funnelshaped air-inlets communicating with said horizontal pipe, vertical pipes communicating with said horizontal pipe, all of said pipes formed of two or more sections and arranged to telescope, and radiating means with which said vertical pipes communicate.

10. In a hot-air heater for open grates, the combination with a gas-burner of a horizontal pipe arranged so as to be adjustable to grates of different widths and located over said gas-burner, vertical pipes communicating with said horizontal pipe and arranged so as to be adjustable to grates of difierent heights, and radiating means with which said vertical pipes communicate, substantially as described.

Signed by me at \Vheeling, \Vest Virginia, this 23d day of February, 1903.

CHARLES FREDERICK BRAND.

Witnesses:

H. E. DUNLAP, HUGH MULLEN. 

